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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UnderlyingSourceBase_h
#define UnderlyingSourceBase_h
#include "bindings/core/v8/ActiveScriptWrappable.h"
#include "bindings/core/v8/ScriptPromise.h"
#include "bindings/core/v8/ScriptState.h"
#include "bindings/core/v8/ScriptValue.h"
#include "bindings/core/v8/ScriptWrappable.h"
#include "core/CoreExport.h"
#include "core/dom/ContextLifecycleObserver.h"
#include "platform/heap/GarbageCollected.h"
#include "platform/heap/Handle.h"
namespace blink {
class ReadableStreamController;
class CORE_EXPORT UnderlyingSourceBase
: public GarbageCollectedFinalized<UnderlyingSourceBase>,
public ScriptWrappable,
public ActiveScriptWrappable<UnderlyingSourceBase>,
public ContextLifecycleObserver {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(UnderlyingSourceBase);
public:
DECLARE_VIRTUAL_TRACE();
virtual ~UnderlyingSourceBase() {}
ScriptPromise startWrapper(ScriptState*, ScriptValue stream);
virtual ScriptPromise start(ScriptState*);
virtual ScriptPromise pull(ScriptState*);
ScriptPromise cancelWrapper(ScriptState*, ScriptValue reason);
virtual ScriptPromise cancel(ScriptState*, ScriptValue reason);
void notifyLockAcquired();
void notifyLockReleased();
// ScriptWrappable
bool hasPendingActivity() const;
// ContextLifecycleObserver
void contextDestroyed(ExecutionContext*) override;
protected:
explicit UnderlyingSourceBase(ScriptState* scriptState)
: ContextLifecycleObserver(scriptState->getExecutionContext()) {}
ReadableStreamController* controller() const { return m_controller; }
private:
Member<ReadableStreamController> m_controller;
bool m_isStreamLocked = false;
};
} // namespace blink
#endif // UnderlyingSourceBase_h
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